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MLS/Aura Level 2 Hydroperoxy (HO2) Mixing Ratio V002 (ML2HO2) at GES DISC
Entry ID: GES_DISC_ML2HO2_V002

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Abstract: ML2HO2 is the EOS Aura Microwave Limb Sounder (MLS) standard product for hydroperoxy derived from radiances measured in two bands from the 640 GHz radiometer. The current version is 2.3. Spatial coverage is near-global (-82 deg. to +82 deg. latitude), with each profile spaced 1.5 deg. or ~165 km along the orbit track (roughly 15 orbits per day). The recommended useful vertical range is from 21.5 ... View entire text
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Description: Access the data via anonymous FTP.
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Geographic Coverage
Spatial coordinates   
  N: 82.0   S: -82.0   E: 180.0   W: -180.0
Min Altitude: 21.5 HPA Max Altitude: 0.0316 HPA

Data Set Citation
Dataset Originator/Creator: EOS MLS Science Team
Dataset Title: MLS/Aura Level 2 Hydroperoxy (HO2) Mixing Ratio
Dataset Series Name: ML2HO2
Dataset Release Date: 2007-01-08
Dataset Release Place: Greenbelt, MD, USA
Dataset Publisher: NASA Goddard Earth Science Data and Information Services Center
Version: 002
Data Presentation Form: Digital Science Data
Online Resource:
Temporal Coverage
Start Date: 2004-08-08
Data Resolution
Latitude Resolution: 300 km at limb tagent point (along-track)
Longitude Resolution: 3 km at limb tagent point (cross-track)
Horizontal Resolution Range: 100 km - < 250 km or approximately 1 degree - < 2.5 degrees
Vertical Resolution: 3 - 6 km
Temporal Resolution: Twice per day; Day and Night; Orbital repeat cycle 16 days
Use Constraints Users are encouraged to register with the MLS science team at to obtain updates and information about this data product.
Ancillary Keywords
Data Set Progress
Data Center
Goddard Earth Sciences Data and Information Services Center (formerly Goddard DAAC), Global Change Data Center, Earth Sciences Division, Science and Exploration Directorate, Goddard Space Flight Center, NASA Supplemental Info
Data Center URL:

Data Center Personnel
Phone: 301-614-5224
Fax: 301-614-5268
Email: gsfc-help-disc at
Contact Address:
Goddard Earth Sciences Data and Information Services Center
Code 610.2
NASA Goddard Space Flight Center
City: Greenbelt
Province or State: MD
Postal Code: 20771
Country: USA
Distribution Media: Online (HTTP)
Distribution Size: 0.92 MB per file
Distribution Format: HDF-EOS5 (Swath)
Phone: 818-354-6716
Email: data at
Contact Address:
Mail Stop 183-701, Jet Propulsion Laboratory
4800 Oak Grove Drive
City: Pasadena
Province or State: CA
Postal Code: 91109-8099
Country: USA
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* Kovalenko, L.J., K.W. Jucks, R.J. Salawitch, G.C. Toon, J-F. Blavier, D.G. Johnson, A. Kleinbohl, N.J. Livesey, J.J. Margitan, H.M. Pickett, M.L. Santee, B. Sen, R.A. Stachnik, and J.W. Waters, "Observed and Modeled HOCl Profiles in the Midlatitude Stratosphere: Implication for Ozone Loss", Geophys. Res. Lett. 34, L19801, doi:10.1029/2007GL031100, 2007.

* Cofield, R.E., and P.C. Stek, "Design and field-of-view calibration of 114-660 GHz optics of the Earth Observing System Microwave Limb Sounder", IEEE Trans. Geosci. Remote Sensing 44, no. 5, 1166-1181, May 2006.

* Pickett, H.M., W.G. Read, K.K. Lee, and Y.L. Yung, "Observation of Night OH in the Mesosphere", Geophys. Res. Lett. 33, L19808, doi:10.1029/2006GL026910, 2006.
Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 2006-09-20
Last DIF Revision Date: 2016-01-20
Future DIF Review Date: 2015-06-01

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